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fill="none" viewBox="0 0 24 24" stroke="currentColor" class="h-6 w-6"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5l7 7-7 7"></path></svg></div></div> <div class="bd-content col-sm-7 pl-sm-2 col-12"><div class="post-content content"><div><div class="post-inner"><!----> <div class="nuxt-content"><article><h1 id="waterfall" tabindex="-1">Waterfall</h1> <p>There is no waterfall series in Apache ECharts, but we can simulate the effect using a stacked bar chart.</p> <p>Assuming that the values in the data array represent an increase or decrease from the previous value.</p> <div class="md-code-block"><div class="nuxt-content-highlight"><pre class="language-js line-numbers"><code><span class="token keyword">var</span> data <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token number">900</span><span class="token punctuation">,</span> <span class="token number">345</span><span class="token punctuation">,</span> <span class="token number">393</span><span class="token punctuation">,</span> <span class="token operator">-</span><span class="token number">108</span><span class="token punctuation">,</span> <span class="token operator">-</span><span class="token number">154</span><span class="token punctuation">,</span> <span class="token number">135</span><span class="token punctuation">,</span> <span class="token number">178</span><span class="token punctuation">,</span> <span class="token number">286</span><span class="token punctuation">,</span> <span class="token operator">-</span><span class="token number">119</span><span class="token punctuation">,</span> <span class="token operator">-</span><span class="token number">361</span><span class="token punctuation">,</span> <span class="token operator">-</span><span class="token number">203</span><span class="token punctuation">]</span><span class="token punctuation">;</span></code></pre></div> <!----> <div class="clipboard" data-v-479657ca><svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="currentColor" class="h-6 w-6" data-v-479657ca><svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="currentColor" class="h-6 w-6" data-v-479657ca><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M8 5H6a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2v-1M8 5a2 2 0 002 2h2a2 2 0 002-2M8 5a2 2 0 012-2h2a2 2 0 012 2m0 0h2a2 2 0 012 2v3m2 4H10m0 0l3-3m-3 3l3 3" data-v-479657ca></path></svg></svg></div></div> <p>That is, the first data is <code>900</code> and the second data <code>345</code> represents the addition of <code>345</code> to <code>900</code>, etc. When presenting this data as a stepped waterfall chart, we can use three series: the first is a non-interactive transparent series to implement the suspension bar effect, the second series is used to represent positive numbers, and the third series is used to represent negative numbers.</p> <div class="md-live layout-tb"><div class="md-live-editor"><div class="md-live-editor-container"><div class="prism-editor-wrapper"><div class="prism-editor__container"><textarea spellcheck="false" autocapitalize="off" autocomplete="off" autocorrect="off" data-gramm="false" placeholder="" data-testid="textarea" class="prism-editor__textarea">var data = [900, 345, 393, -108, -154, 135, 178, 286, -119, -361, -203];
var help = [];
var positive = [];
var negative = [];
for (var i = 0, sum = 0; i &lt; data.length; ++i) {
  if (data[i] >= 0) {
    positive.push(data[i]);
    negative.push('-');
  } else {
    positive.push('-');
    negative.push(-data[i]);
  }

  if (i === 0) {
    help.push(0);
  } else {
    sum += data[i - 1];
    if (data[i] &lt; 0) {
      help.push(sum + data[i]);
    } else {
      help.push(sum);
    }
  }
}

option = {
  title: {
    text: 'Waterfall'
  },
  grid: {
    left: '3%',
    right: '4%',
    bottom: '3%',
    containLabel: true
  },
  xAxis: {
    type: 'category',
    splitLine: { show: false },
    data: (function() {
      var list = [];
      for (var i = 1; i &lt;= 11; i++) {
        list.push('Oct/' + i);
      }
      return list;
    })()
  },
  yAxis: {
    type: 'value'
  },
  series: [
    {
      type: 'bar',
      stack: 'all',
      itemStyle: {
        normal: {
          barBorderColor: 'rgba(0,0,0,0)',
          color: 'rgba(0,0,0,0)'
        },
        emphasis: {
          barBorderColor: 'rgba(0,0,0,0)',
          color: 'rgba(0,0,0,0)'
        }
      },
      data: help
    },
    {
      name: 'positive',
      type: 'bar',
      stack: 'all',
      data: positive
    },
    {
      name: 'negative',
      type: 'bar',
      stack: 'all',
      data: negative,
      itemStyle: {
        color: '#f33'
      }
    }
  ]
};</textarea><pre data-testid="preview" class="prism-editor__editor"><span class="token keyword">var</span> data <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token number">900</span><span class="token punctuation">,</span> <span class="token number">345</span><span class="token punctuation">,</span> <span class="token number">393</span><span class="token punctuation">,</span> <span class="token operator">-</span><span class="token number">108</span><span class="token punctuation">,</span> <span class="token operator">-</span><span class="token number">154</span><span class="token punctuation">,</span> <span class="token number">135</span><span class="token punctuation">,</span> <span class="token number">178</span><span class="token punctuation">,</span> <span class="token number">286</span><span class="token punctuation">,</span> <span class="token operator">-</span><span class="token number">119</span><span class="token punctuation">,</span> <span class="token operator">-</span><span class="token number">361</span><span class="token punctuation">,</span> <span class="token operator">-</span><span class="token number">203</span><span class="token punctuation">]</span><span class="token punctuation">;</span>
<span class="token keyword">var</span> help <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token punctuation">;</span>
<span class="token keyword">var</span> positive <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token punctuation">;</span>
<span class="token keyword">var</span> negative <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token punctuation">;</span>
<span class="token keyword">for</span> <span class="token punctuation">(</span><span class="token keyword">var</span> i <span class="token operator">=</span> <span class="token number">0</span><span class="token punctuation">,</span> sum <span class="token operator">=</span> <span class="token number">0</span><span class="token punctuation">;</span> i <span class="token operator">&lt;</span> data<span class="token punctuation">.</span>length<span class="token punctuation">;</span> <span class="token operator">++</span>i<span class="token punctuation">)</span> <span class="token punctuation">{</span>
  <span class="token keyword">if</span> <span class="token punctuation">(</span>data<span class="token punctuation">[</span>i<span class="token punctuation">]</span> <span class="token operator">>=</span> <span class="token number">0</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
    positive<span class="token punctuation">.</span><span class="token function">push</span><span class="token punctuation">(</span>data<span class="token punctuation">[</span>i<span class="token punctuation">]</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    negative<span class="token punctuation">.</span><span class="token function">push</span><span class="token punctuation">(</span><span class="token string">'-'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  <span class="token punctuation">}</span> <span class="token keyword">else</span> <span class="token punctuation">{</span>
    positive<span class="token punctuation">.</span><span class="token function">push</span><span class="token punctuation">(</span><span class="token string">'-'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    negative<span class="token punctuation">.</span><span class="token function">push</span><span class="token punctuation">(</span><span class="token operator">-</span>data<span class="token punctuation">[</span>i<span class="token punctuation">]</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  <span class="token punctuation">}</span>

  <span class="token keyword">if</span> <span class="token punctuation">(</span>i <span class="token operator">===</span> <span class="token number">0</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
    help<span class="token punctuation">.</span><span class="token function">push</span><span class="token punctuation">(</span><span class="token number">0</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  <span class="token punctuation">}</span> <span class="token keyword">else</span> <span class="token punctuation">{</span>
    sum <span class="token operator">+=</span> data<span class="token punctuation">[</span>i <span class="token operator">-</span> <span class="token number">1</span><span class="token punctuation">]</span><span class="token punctuation">;</span>
    <span class="token keyword">if</span> <span class="token punctuation">(</span>data<span class="token punctuation">[</span>i<span class="token punctuation">]</span> <span class="token operator">&lt;</span> <span class="token number">0</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
      help<span class="token punctuation">.</span><span class="token function">push</span><span class="token punctuation">(</span>sum <span class="token operator">+</span> data<span class="token punctuation">[</span>i<span class="token punctuation">]</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span> <span class="token keyword">else</span> <span class="token punctuation">{</span>
      help<span class="token punctuation">.</span><span class="token function">push</span><span class="token punctuation">(</span>sum<span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span>
  <span class="token punctuation">}</span>
<span class="token punctuation">}</span>

option <span class="token operator">=</span> <span class="token punctuation">{</span>
  <span class="token literal-property property">title</span><span class="token operator">:</span> <span class="token punctuation">{</span>
    <span class="token literal-property property">text</span><span class="token operator">:</span> <span class="token string">'Waterfall'</span>
  <span class="token punctuation">}</span><span class="token punctuation">,</span>
  <span class="token literal-property property">grid</span><span class="token operator">:</span> <span class="token punctuation">{</span>
    <span class="token literal-property property">left</span><span class="token operator">:</span> <span class="token string">'3%'</span><span class="token punctuation">,</span>
    <span class="token literal-property property">right</span><span class="token operator">:</span> <span class="token string">'4%'</span><span class="token punctuation">,</span>
    <span class="token literal-property property">bottom</span><span class="token operator">:</span> <span class="token string">'3%'</span><span class="token punctuation">,</span>
    <span class="token literal-property property">containLabel</span><span class="token operator">:</span> <span class="token boolean">true</span>
  <span class="token punctuation">}</span><span class="token punctuation">,</span>
  <span class="token literal-property property">xAxis</span><span class="token operator">:</span> <span class="token punctuation">{</span>
    <span class="token literal-property property">type</span><span class="token operator">:</span> <span class="token string">'category'</span><span class="token punctuation">,</span>
    <span class="token literal-property property">splitLine</span><span class="token operator">:</span> <span class="token punctuation">{</span> <span class="token literal-property property">show</span><span class="token operator">:</span> <span class="token boolean">false</span> <span class="token punctuation">}</span><span class="token punctuation">,</span>
    <span class="token literal-property property">data</span><span class="token operator">:</span> <span class="token punctuation">(</span><span class="token keyword">function</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
      <span class="token keyword">var</span> list <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token punctuation">;</span>
      <span class="token keyword">for</span> <span class="token punctuation">(</span><span class="token keyword">var</span> i <span class="token operator">=</span> <span class="token number">1</span><span class="token punctuation">;</span> i <span class="token operator">&lt;=</span> <span class="token number">11</span><span class="token punctuation">;</span> i<span class="token operator">++</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
        list<span class="token punctuation">.</span><span class="token function">push</span><span class="token punctuation">(</span><span class="token string">'Oct/'</span> <span class="token operator">+</span> i<span class="token punctuation">)</span><span class="token punctuation">;</span>
      <span class="token punctuation">}</span>
      <span class="token keyword">return</span> list<span class="token punctuation">;</span>
    <span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
  <span class="token punctuation">}</span><span class="token punctuation">,</span>
  <span class="token literal-property property">yAxis</span><span class="token operator">:</span> <span class="token punctuation">{</span>
    <span class="token literal-property property">type</span><span class="token operator">:</span> <span class="token string">'value'</span>
  <span class="token punctuation">}</span><span class="token punctuation">,</span>
  <span class="token literal-property property">series</span><span class="token operator">:</span> <span class="token punctuation">[</span>
    <span class="token punctuation">{</span>
      <span class="token literal-property property">type</span><span class="token operator">:</span> <span class="token string">'bar'</span><span class="token punctuation">,</span>
      <span class="token literal-property property">stack</span><span class="token operator">:</span> <span class="token string">'all'</span><span class="token punctuation">,</span>
      <span class="token literal-property property">itemStyle</span><span class="token operator">:</span> <span class="token punctuation">{</span>
        <span class="token literal-property property">normal</span><span class="token operator">:</span> <span class="token punctuation">{</span>
          <span class="token literal-property property">barBorderColor</span><span class="token operator">:</span> <span class="token string">'rgba(0,0,0,0)'</span><span class="token punctuation">,</span>
          <span class="token literal-property property">color</span><span class="token operator">:</span> <span class="token string">'rgba(0,0,0,0)'</span>
        <span class="token punctuation">}</span><span class="token punctuation">,</span>
        <span class="token literal-property property">emphasis</span><span class="token operator">:</span> <span class="token punctuation">{</span>
          <span class="token literal-property property">barBorderColor</span><span class="token operator">:</span> <span class="token string">'rgba(0,0,0,0)'</span><span class="token punctuation">,</span>
          <span class="token literal-property property">color</span><span class="token operator">:</span> <span class="token string">'rgba(0,0,0,0)'</span>
        <span class="token punctuation">}</span>
      <span class="token punctuation">}</span><span class="token punctuation">,</span>
      <span class="token literal-property property">data</span><span class="token operator">:</span> help
    <span class="token punctuation">}</span><span class="token punctuation">,</span>
    <span class="token punctuation">{</span>
      <span class="token literal-property property">name</span><span class="token operator">:</span> <span class="token string">'positive'</span><span class="token punctuation">,</span>
      <span class="token literal-property property">type</span><span class="token operator">:</span> <span class="token string">'bar'</span><span class="token punctuation">,</span>
      <span class="token literal-property property">stack</span><span class="token operator">:</span> <span class="token string">'all'</span><span class="token punctuation">,</span>
      <span class="token literal-property property">data</span><span class="token operator">:</span> positive
    <span class="token punctuation">}</span><span class="token punctuation">,</span>
    <span class="token punctuation">{</span>
      <span class="token literal-property property">name</span><span class="token operator">:</span> <span class="token string">'negative'</span><span class="token punctuation">,</span>
      <span class="token literal-property property">type</span><span class="token operator">:</span> <span class="token string">'bar'</span><span class="token punctuation">,</span>
      <span class="token literal-property property">stack</span><span class="token operator">:</span> <span class="token string">'all'</span><span class="token punctuation">,</span>
      <span class="token literal-property property">data</span><span class="token operator">:</span> negative<span class="token punctuation">,</span>
      <span class="token literal-property property">itemStyle</span><span class="token operator">:</span> <span class="token punctuation">{</span>
        <span class="token literal-property property">color</span><span class="token operator">:</span> <span class="token string">'#f33'</span>
      <span class="token punctuation">}</span>
    <span class="token punctuation">}</span>
  <span class="token punctuation">]</span>
<span class="token punctuation">}</span><span class="token punctuation">;</span><br></pre></div></div></div> <div class="md-live-tag">live</div> <div class="clipboard" data-v-479657ca><svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="currentColor" class="h-6 w-6" data-v-479657ca><svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="currentColor" class="h-6 w-6" data-v-479657ca><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M8 5H6a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2v-1M8 5a2 2 0 002 2h2a2 2 0 002-2M8 5a2 2 0 012-2h2a2 2 0 012 2m0 0h2a2 2 0 012 2v3m2 4H10m0 0l3-3m-3 3l3 3" data-v-479657ca></path></svg></svg></div></div> <div class="md-live-preview"></div></div></article></div></div> <div class="post-contributors"><h3><span class="inline-block align-middle">Contributors</span> <a target="_blank" 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src="https://avatars.githubusercontent.com/pissang?size=60" loading="lazy"> <span>pissang</span></a></div></div></div></div></div></div> <link rel="stylesheet" href="//fastly.jsdelivr.net/npm/highlight.js@9.12.0/styles/github-gist.min.css"></div></div></div></div><script>window.__NUXT__=function(t,i,e,r,d,a,l,g,s,n,o,C,c,I,h,A,p,w,b,m,B,f,G,S,u,H,Z,K,L,v,y,T,D,R,X,M,V,k,z,N,Y,x,J,O,P,W,E,F,U,j,Q,_,$,q,tt,it,et,rt){return{layout:"default",data:[{html:'<h1 id="waterfall" tabindex="-1">Waterfall</h1>\n<p>There is no waterfall series in Apache ECharts, but we can simulate the effect using a stacked bar chart.</p>\n<p>Assuming that the values in the data array represent an increase or decrease from the previous value.</p>\n<md-code-block lang="js" code="\'dmFyIGRhdGEgPSBbOTAwLCAzNDUsIDM5MywgLTEwOCwgLTE1NCwgMTM1LCAxNzgsIDI4NiwgLTExOSwgLTM2MSwgLTIwM107\'" line-highlights="\'\'" />\n<p>That is, the first data is <code>900</code> and the second data <code>345</code> represents the addition of 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